Difference between a jpg image and a jpeg image

Q: What is the difference between a jpg image and a jpeg image? A: There is no actual difference between "jpg" and "jpeg" - they both refer to the same image file format, "Joint Photographic Experts Group" (JPEG), with the only distinction being that "jpg" is simply a shortened version due to older operating systems limiting file extensions to three characters. Essentially, they are interchangeable on modern systems.